This is a bit off topic but I fear Karlach won't fit in a good aligned party. It's been speculated that her heart needs soul coins to operate. But when you use a soul coin to operate an infernal machine it tortures the soul to death and it screams entire time while its soul is being burnt away - see 4:45
I honestly kinda doubt that. Soul Coins are a rare thing. It is actually possible to miss them all. So, does that mean that those who do not explore (and are to late to save a certain Tiefling) can not actually use Karlach? That makes little sense to me.
